Retevis RT78 Bluetooth Two Way Radio, IP67 Waterproof 5200mAh Mobile App Operation, Network Dual Band Unlimited Range Walkie Talkie (1 Pack)

* Easy APP operation, you can use the mobile phone to download APP to make use of channels of the walkie-talkie; no need for professional frequency writing * Bluetooth function, you can connect a Bluetooth headset for pleasant and comfortable communication * High power tx audio and rx audio; which will provide you long range signal and clear voice * High-quality 5200mAh lithium battery; 135 hours of standby time; you can work continuously for 12 hours; and the charging time is only 6 hours * IP67 dustproof and waterproof; if you accidentally drop it into the water; take it out of the water and wipe it to dry; it can still work well * Using APP operation, you can find many people to talk and you can know which city they are in * Using APP operation, you can find many people to talk and you can know which city they are in